Which 2017 animated superhero film features Carey voicing Mayor McCaskill?

The 2017 animated superhero film featuring Carey voicing Mayor McCaskill is The Lego Batman Movie.

Directed by Chris McKay, the film was released in February 2017 as a spin-off of The Lego Movie. It follows Batman, voiced by Will Arnett, as he confronts the Joker while struggling with loneliness, teamwork, and the unexpected possibility of becoming a family figure.

Carey voices Mayor McCaskill, the mayor of Gotham City. The character is part of the film's broad ensemble, which also includes Ralph Fiennes as Alfred, Michael Cera as Robin, Rosario Dawson as Barbara Gordon, and Zach Galifianakis as the Joker.

The title can be confused with The Lego Movie, which introduced this version of Batman, or with later animated superhero films such as Teen Titans Go! To the Movies. Carey is not voicing a superhero herself; her role is Gotham's mayor in the Lego Batman setting.